11 week old baby fussing after fall?

My 11 week old fell off the couch on Tuesday, I took him to the ER and they checked him out and said he's fine but he's been SOOOOO fussy ever since. He wants to be in my arms all the time, he wasn't like this before, is this normal? How long will it last? Is there anything I can do to calm him? I've tried all the usual things, rocking, singing, walking, feeding, pacifier, playing with him, diaper changes, beths, I don't know what else to do.